thought this was pretty cool fan story of broly becoming Mystic Like Gohan, it is pretty good, if u dislike broly, just ignore because this is a fan story, ok here we go.

Mystic Broly. (Part 1)

In a different timeline, he single handedly defeated the Z fighters. After his victory, he decided to terrorize and cause destruction over the entire universe until he sees fit. One day, he stumbled until a weird looking planet. This planet happen to be known as the Kai's world.

Once landed of the planet he noticed two Kai's, Supreme Kai and Kibito Kai. They already knew right off the bat that they would have no chance against Broly. But, Broly's true purpose was to gain more power and increase strength. He is after all, a Sayian.

Broly then demanded that they give him more power. Left with no other choice, the two Kai's willingly agreed to help Broly. They told Broly about the Z sword and what to do with it. Having lifted the Z sword easily, Broly feel no new power coming within him and decided to get frustrated. In a rage, he broke the Z sword. But then suddenly, a flash a erupted from the broken sword, and out came a new Kai. The Old Kai.

Old Kai looked at the Sayian in a weird way and was confused of the situation. Broly, still frustrated, responded with a mean look on his face. The supreme Kai teleported next to Old Kai and immediately told him the situation. Old Kai nodded in agreement and decided to give Broly his wish.

*Several Hours Later*

Old Kai: "Well, there you go. You're definitely stronger now."

Mystic Broly:......

Old Kai: Hey! You could at least say thank you!

In a flash, Broly grabbed the Old Kais neck, snapping it. Supreme and Kibito Kai were surprised at what had just happened.

Mystic Broly: "Hmph, puny runt."

Broly, satisfied, left the planet instantly. Now in space, he destroyed the Kais world with Supreme and Kibito Kai on it. Having his mission completed and achieved more power than before, he decided that he continue his destruction over the universe. Or what's left of it anyway.

Weeks past, and Broly wanted a new opponent. A new foe. Someone who would be worth of his power. He decided searches planets in need of one. Every unsuccessful attempt resulted in a planet being destroyed. He then saw one more planet in his sight and headed towards it.

Broly landed of the planet, still searching for an opponent. Then, off guard, Broly was approached by a new person. This new person has a huge staff, a floating ring around his chest, tacky clothes and a weird hairstyle.

He introduced himself....

"Hello, I'm Whis."

Broly stayed quiet but opened his mouth.

Mystic Broly: "Fight.... Me." In an instant, Broly charged up his power and got into his fighting stance.